We have 2 physical server with 64gb ram 4 socket of quad 2 core RHEL 5.3 XEN install on top win2k3*8(8 server of win2k3) and win2008*4(4 server win2008) running is any tool at open source to manager all these from winxp or ubuntu 9.04 client. Which can give live migration feature, fail over migration each other.
pls ignore with my write skill.